Thanks much for the share. Looks outstanding. Meets all qualifications we look for in an outstanding food, an even better ingredient list than NLS. Certainly necessitates more investigation. I wonder if it is available in the U.S.?

Yeah, my thoughts exactly! That's too much food to use up! Hopefully smaller sizes will become available.
By the way, here's the response I got from Northfin, they said it was fine for me to post it:

Thank You for supporting Canadian products.

Northfin fish food are made in our facility and we do not have or use any preservatives. We do not use any oils or fats and would be no need to ad any. Also we find our formulas stable when kept properly.
All our main ingredients are ordered fresh from Canadian factories, we do not buy or import any from offshore.

Answer to the second question: Ingredient analysis are based on the dry form. Whole Krill or Whole Kelp will always be in the first place as the main ingredient with the highest percentage.

Not necessarily. The drying process itself is a preservative. If you've ever been to Asia, you will be familiar with "Dried Fish" and these are fish that are just dried in the sun, packaged up, put on a shelf, and shipped around the world. No preservatives used. No refrigeration. Dried (and salted) meats are how mankind preserved their excess food before refrigeration. It's how many third world cultures still do it.

The prevalence of preservatives in fish food is less about preserving than it is about preventing fires aboard ship. Improperly dried Fish Meal (and other "fatty" meal products) have been known to spontaneously combust. To prevent this, laws require meal products be preserved using Ethoxyquin, BHA, BHA, or or a "tocopherol-based liquid antioxidant", if they are going to be shipped via boat.

A properly dried product, if properly stored and prevented from getting wet, will last 6 months to a year, absent preservatives. While the preservatives can extend that period to several years, who is going to have a bag of food sitting unused for several years. Not me.

All of that said, while Northfin does not use any preservatives in the manufacturing of their foods without knowing the source of their meals (they say all products entering the manufacturing phase are in dry form...... dry form = meal), we cannot confirm the absence of preservatives in their foods. While they don't add it, if the meals arrived on a boat, they will have been preserved with BHA, BHT, Ethoxyquin, or a "tocopherol-based liquid antioxidant".

However, they do specify that their source products are locally sourced from Canadian companies, which actually does make it possible to have an Ethoxyquin free food. We know it's possible. Hikari, Aqueon, and Zoo Med pull it off.